<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id="app">
    {{ message }}
    <br>
    {{ reverseMessage() }}
    <br>
    <input type="text" v-model="message">
    <br>
    <input type="text" v-bind:value="message" v-on:input="handleInput">
    <br>
    <button @click="send">发送</button>
  </div>

  <script src="./libs/vue.js"></script>
  <script>
    const vm = new Vue({
      el: '#app',
      data: {
        message: 'Hello Vue.js'
      },
      methods: {
        send() {
          console.log('消息内容：', this.message)
        },
        reverseMessage() {
          return this.message.split('').reverse().join('')
        },
        handleInput(event) {
          // console.log('event:', event)
          // 修改 message 数据
          this.message = event.target.value
        }
      }
    })
  </script>
</body>
</html>